Turn On; Turn On With Pwrkey - Quectel SG368Z Series Hardware Design

3.2. Turn On

3.2.1. Turn On with PWRKEY

Table 8: Pins Description of PWRKEY
Pin Name
PWRKEY
When powering up the VBAT, the module can be turned on by driving PWRKEY low for at least 200 ms. It
is recommended to use an open drain/collector driver to control the PWRKEY. PWRKEY is pulled up to
VBAT internally.
MCU
Figure 4: Reference Design of Turn On with Driving Circuit
Another way to control the PWRKEY is using a keystroke directly. When pressing the keystroke, an
electrostatic strike may be generated from finger. Therefore, you should place a TVS near the keystroke
for ESD protection. Additionally, a 1 kΩ resistor is connected in series to PWRKEY for ESD protection.
SG368Z_Series_Hardware_Design
Pin No. I/O
226 DI
＞ 200 ms
Turn on pulse
4.7K
GPIO
Q1
S1
TVS
Close to S1
Figure 5: Reference Design of Turn On with Keystroke
Description
Turn on/off the module
47K
R1
1K
Turn-on pulse
Smart Module Series
Comment
Active low.
PWRKEY
Module
PWRKEY
Module
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